Ex4 Intro

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Ex4 Intro
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Topics

• Image similarity
• Reclassing and .RCL files
• RECLASS
• EDIT
• Making pallets
• Assign and Extract

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RECLASS

• The ability to change any or all values in an
  image to different values.
• Several ways
• RECLASS module
• Reclass file (.rcl)
• ASSIGN

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Image Similarity

• Three methods
• Use REGRESSion. -- R
• If R1 then the relation between the images is
  perfect
• If R0 then there is NO relation between
• Use CROSSTAB image similarity
• Cramers V
• Kappa

5
Palettes

• Two tools make sure you get the right one
• Symbol Workshop -- vector stuff
• Symbol Workshop Palettes
• Where saved
• Blending

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Assign

• ASSIGN creates new images or vector files by
  linking the geography of features defined in the
  input file with attributes defined in an
  attribute values file.

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Extract

• Extracts summary statistics to either a table or
  an attribute values file from an existing image
  file. Uses two files
• image file The image to be processed by the
• feature definition file - The image defining
  distinct features or regions the geography